Coucou ("Cuckoo") is an historical French card game that uses a pack of 32 or 52 cards and is played by five to twenty players. It is unusual for being played with only a single card in hand. As a shedding game, there is only one winner who may claim the stakes, if there are any. The game has also been called As Qui Court or Hère.

The earliest references to the game date to the early 16th century in France where it was known by the name of Mécontent (also Méscontent, Maucontent or Malcontent) and was played with a standard 52-card deck. The first rules appear under the name Hère in 1690 and as Coucou in 1721. The name As Qui Court appears in the mid-19th century, but the name Coucou ("cuckoo") persisted and the game is still played in France today under that name.

The game migrated to England by 1881 as Ranter-Go-Round, but is now also sometimes known as Cuckoo.

The game uses a regular 52-card pack, or a smaller 32-card deck (with 2s through 6s absent) if fewer than seven are playing. Suits are not relevant; only the card ranks are important. Regardless of whether the 32 or 52 cards is used, the lowest card is always the Ace and the highest the King.

The first dealer of the game is determined by lots as agreed between the players. The dealer deals in an anti-clockwise direction starting with first hand, the player to the right, dealing one card to each opponent and three as the dealer's hand.

After consulting the dealer's three-card hand, the dealer keeps the highest and puts the other two, face down, underneath the remainder of the deck (known as the talon). The talon is then placed between the dealer and the player to the right, who would become the next dealer.

At this point, all players have only one card.

Each players is also each given the same number of chips for scoring; for example, five.